Perennials, 6–12 cm, densely stipitate-glandular or eglandular; taprooted (usually not evident in collections), forming beds or clumps of large, separate tufts connected by underground rhizomes and caudexlike, scaly-leaved stems. Leaves even-sized, densely overlapping; blades linear-oblanceolate to lanceolate, 5–11(–20) × 0.5–2 mm, coriaceous, bases not clasping (midnerves strongly raised, longitudinally 2-grooved adaxially), apices spinulose, faces usually densely, minutely, orangish stipitate-glandular. Involucres turbinate to hemispheric, (3.5–)4.5–6(–7) × 4–8 mm. Ray florets (8–)12–24; corollas white. Disc florets 12–24, bisexual. Cypselae 1.7–3 mm, 5-nerved, faces strigose; pappi of (20–)24–26(–30) barbellate bristles in 1 series. 2n = 16, 32.
Home